JPH0683576A - Formless input output processing system - Google Patents

Abstract

PURPOSE:To execute a formless input output statement to/from a same file between computers whose FORTRAN1 numerical storage unit is different without correction of a user program by devising the content of the file to be in matching with the FORTRAN1 numerical storage unit of the user program. CONSTITUTION:When a formless input output statement of a user program 13 is executed to a file 17, an analysis means 141 of an input output processing routine 14 discriminates whether or not the file 17 is a file inputted/outputted to/from other computer 15 whose FORTRAN1 numerical storage unit is different based on a 1st option 121 of an option 12 at the execution. When the file 17 is the file inputted/outputted to/from the computer 15, an analysis means 142 discriminates how a data type relating to this input output is to be converted based on a 2nd option 122. An input output processing means 143 implements input/output relating to a formless input output statement while implementing conversion to a designated type according to the discrimination result of the analysis means 142.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an unformatted input / output processing method in a computer for processing unformatted input / output statements such as unformatted WRITE statement in FORTRAN language.

[0002]

2. Description of the Related Art A FORTRAN language processor is provided,
When a FORTRAN1 numerical storage unit is, for example, 8 bytes, an unformatted output statement of WRITE (1) I ... (1) is executed with a file as an output destination, 8-byte unformatted data is created in the file.

When this file is input by a computer having the same FORTRAN1 numerical storage unit of 8 bytes, it is sufficient to describe the unformatted output statement READ (1) I ... (2) in the user program.

As described above, the unformatted input / output statement has an advantage that the input / output can be easily performed without requiring the format created by the user himself / herself.

[0005]

By the way, input / output to / from a file by an unformatted input / output statement is not limited to a file that is used only by the own computer, but also for a file that is input / output from another computer. May be carried out. In this case, there is no problem if the other computer has exactly the same FORTRAN1 numerical storage unit as the own computer.
However, if it is different, conventionally, the user program must be modified for the file or the input and output without format must be abandoned.

For example, a file in which 8-byte unformatted data is created by executing the output statement of (1) above is
ORTRAN1 In order to input with a computer whose numerical storage unit is 4 bytes, if an 8-byte integer type is supported, use as INTEGER * 8 I ... (3) READ (1) I ... (4) If the user program is modified and only 4-byte integer type is supported, it is necessary to modify the user program as follows: INTEGER IDUMMY, I ... (5) READ (1) IDUMMY, I ... (6) .

On the contrary, the FORTRAN1 numerical storage unit is 4
In a computer that is bytes, when an unformatted output statement such as WRITE (1) I ... (7) is executed with a file as an output destination, 4-byte unformatted data is created in the file.
In order to input the RTRAN1 numeric storage unit on a computer with 8 bytes, if 4-byte integer type is supported, use as INTEGER * 4 I ... (8) READ (1) I ... (9) The user program needs to be modified. Input is impossible on a computer that does not support the 4-byte integer type.

The present invention has been made in view of the above circumstances, and an object thereof is to output unformatted input / output statements to the same file without modification of a user program even between computers having different FORTRAN1 numerical storage units. To be able to carry out.

[0009]

The present invention adopts the following configurations (A), (B) and (C) in order to achieve the above object.

(A) When the unformatted input / output statement for the file of the user program is executed, the file to be input / output by the user program is the FORTRAN1 numerical storage unit based on the first option in the run-time options. First option analysis means for determining whether or not the file is input / output from another different computer;
When the option analysis unit determines that the file is also input / output from another computer, how to convert the type of data related to the current input / output based on the second option in the runtime option is determined. Second to judge
A configuration comprising an option analysis means and an input / output processing means for performing input / output relating to the unformatted input / output statement while converting the input / output and the designated type according to the determination result of the second option analysis means.

(B) At the time of executing an unformatted input / output statement for a file of a user program, the file to be input / output by the user program is FORTRAN1 from another computer having a different numerical storage unit based on the run-time option. Contents of the data type correspondence table by determining whether the file is also a file to be input / output, and the option analyzing unit determines that the file is also input / output from another computer. Referring to the internal table analysis means for determining how to convert the type of the data related to the current input / output, and converting the input / output and the specified type according to the determination result of the internal table analysis means. A configuration including an input / output processing means for performing input / output relating to unformatted input / output statements.

(C) A structure having a data type correspondence file instead of the data type correspondence table of the configuration (B), and having a file analysis means instead of the internal table analysis means.

[0013]

In the unformatted input / output processing method of the configuration (A), when the unformatted input / output statement for the file of the user program is executed, the first option analysis means gives an instruction to control the execution of the user program. Based on the first option in the run-time options, the file that the user program tries to input / output is FORTRAN.
It is determined whether or not the file is input / output from / to another computer having a different numerical storage unit, and the first option analysis means determines that the file is / are to be input / output from / to another computer. , The second option analysis means determines how to convert the type of data relating to the current input / output based on the second option in the runtime option, and the input / output processing means determines the second option analysis means. According to the determination result, input / output relating to the unformatted input / output statement is performed while converting the input / output and the designated type.

In addition, in the unformatted input / output processing method having the configurations of (B) and (C), the option analysis means performs execution of the user program when the unformatted input / output statement for the file of the user program is executed. Based on the run-time option that directs control, it is determined whether the file that the user program attempts to input / output is a file that also performs input / output from another computer with a different FORTRAN1 numeric storage unit, and this option The internal table analysis means or the file analysis means refers to the contents of the data type correspondence table or the data type correspondence file by determining that the file is also input / output from another computer by the analysis means. I / O processing means decides how to convert the data type related to input / output of According to the judgment result of the table analyzing means or file analyzing means, while converting the input and output as well as the specified type, and inputs and outputs according to the unformatted input sentences.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings.

Referring to FIG. 1, an example of a computer system to which the unformatted input / output processing method of the present invention is applied includes a computer 11, a computer 15, and a file 17 referenced by both computers 11, 15. .

The two computers 11 and 15 are respectively FOR
The TRAN1 numeric storage units are different, the FORTRAN1 numeric storage unit of the computer 11 is, for example, 8 bytes, and the FORTRAN1 numeric storage unit of the computer 15 is, for example, 4 bytes. Further, the input / output processing by the READ statement (or WRITE statement) of the user program 16 operating on the computer 15 is the same as the conventional one, and the same file 17 is not modified by the user program between the computers having different FORTRAN1 numerical storage units. Calculator 11 can be used for
It is applied to the side.

That is, in the computer 11, in addition to the user program 13 that uses the file 17, the first option 121 and the second option 121 are included in the run-time option 12 in which the user instructs control regarding the execution of the user program 13. 122 is included, and the input / output processing routine 14 is provided with a first option analyzing means 141, a second option analyzing means 142, and an input / output processing means 143.

The first option 121 is an option for designating whether or not a file to be input / output is a file to / from which another computer 15 having a different FORTRAN1 numerical storage unit also inputs / outputs. It has STORAGE-UNIT-nn and takes SAME or DIFFER as a value. Here, nn indicates the device number, SAME indicates that the FORTRAN1 numerical storage unit is the same, and DIFFER indicates that it is different. Therefore, the first option 121 shown in the drawing specifies that the input / output to / from the device number 01 (corresponding to the file 17 in this example) is also a file to be input / output from the computers 15 having different FORTRAN1 numerical storage units. .

The second option 122 is an option for designating the type of data to be converted and its conversion method, and the option name itself indicates the type of data to be converted.
The value specifies the length to be converted. Therefore, the second option 122 having the option name INTEGER and the value 4BYTE shown in the figure indicates that the integer type is the type of data to be converted and that it is processed as 4 bytes.
It should be noted that, in this embodiment, for other types such as the real number type, since it is assumed that the FORTRAN1 numerical storage units are the same in the computers 11 and 15, the second option related thereto is not included in the runtime option 12. However, if they are different, the second option for them is also specified.

On the other hand, the first option analyzing means 141 of the input / output processing routine 14 receives an input from the user program 13 to the file 17 without formatting, based on the first option 121 of the run-time option 12. This is a means for analyzing whether or not the file to be output is designated as a file to be input / output also from another computer 15 having a different FORTRAN1 numerical storage unit.

The second option analysis means 142 is
It is a means for analyzing which data type and how conversion is specified based on the second option 122 of the runtime option 12.

Further, the input / output processing means 143 instructs the input / output and the designated type when the unformatted input / output statement is executed by the second option 122 of the runtime option 12 when the type is a conversion target. Is a means for performing input / output with a specified length while performing conversion according to.

The operation of this embodiment will be described below.

By executing the unformatted WRITE statement for the file 17 of the user program 13 of the computer 11,
Control is transferred to the input / output processing routine 14, and first the first option analysis means 141 is called.

The first option analyzing means 141 analyzes the first option 121 of the runtime option 12 so that the file 17 to be input / output this time is FORTRAN.
It is checked whether or not the file is input and output from another computer 15 having a different numerical storage unit. And DEF
If the file is designated as ER, that is, a file that is also input / output from another computer 15 having a different numerical storage unit, the control is transferred to the second option analysis means 142, and designated as SAME, that is, FORTRAN1.
If it is a file whose numerical storage unit is input and output from the same computer, control is transferred to normal processing similar to the conventional one. In the case of FIG. 1, since the first option 121 is designated as DEFFER, the control is transferred to the second option analysis means 142.

The second option analysis means 142 analyzes the second option 122 of the runtime option 12 in order to know the type of data to be converted. The variable I relating to the input / output this time is an integer type, and the integer type is designated as the type of data to be converted in the second option 122. Therefore, the second option analysis unit 142 instructs the input / output processing unit 143 to process the integer type as 4 bytes. If the input / output of this time is not for the type of data to be converted, the normal processing similar to the conventional processing is performed.

The input / output processing means 143 inputs / outputs to / from the file 17 while performing conversion according to the contents instructed by the second option analysis means 142. That is, although the variable I is processed as an 8-byte integer type in the computer 11, the second option 122 specifies that the integer type is input and output in 4 bytes, so only the lower 4 bytes are stored in the file 17. Output. The upper 4 bytes are FOR
TRAN1 is set to 0 at the stage of processing of the user program 13 on the assumption that the file 17 is used even in a computer whose numerical storage unit is 4 bytes.

The above is the case of output, but in the case of input, 4 bytes are input to the lower 4 bytes and the upper 4 byte digits are expanded in sign. Further, assuming that the type of the input / output sequence is a real number type and is processed with 8 bytes in the computer 11 and 4 bytes in the computer 15, for output, the upper 4 bytes are output to the file 17, and for input, Is the top 4
After filling in the bytes, the lower 4 bytes are filled with zeros. Other data types are processed similarly.

Further, on the contrary, FORTRAN1 of the computer 11
When the numerical storage unit is smaller than the computer 15, for example, when the FORTRAN1 numerical storage unit of the computers 11 and 15 is 4 bytes and 8 bytes, respectively, the second option is I.
If NTGER = 8BYTE is specified, in the case of output, the value that is sign-extended to 4 bytes is output and then the value of 4 bytes is output, in the case of input, discards 4 bytes and inputs the next 4 bytes. . The same is true for real numbers and other types.

In this way, the contents of the file 17 output are the FOR of the user program 16 on the computer 15.
TRAN1 It has a shape that matches the numerical memory unit. Therefore,
FORTRAN1 Computers 11 and 1 with different numerical storage units
Even between 5 periods, the same file 17 can be used without modifying the user program.

FIG. 2 is a block diagram showing another example of a computer system to which the unformatted input / output processing system of the present invention is applied. The same reference numerals as those in FIG. 1 denote the same parts, 25 denotes a data type correspondence table, 241 is an option analysis means, 242
Is an internal table analysis means, and 243 is an input / output processing means.

In the computer system shown in FIG. 2,
Only the first option 121 is specified in the run-time option 12, and instead of the second option 122 in FIG. 1, a data type correspondence table indicating how each data type on the own computer 11 corresponds on the computer 15. 25 is internally held as a system. That is, the FORTRAN1 numerical storage unit of the integer type of the computer 11 is 8 bytes,
FORTRAN1 numeric storage unit for integer type 5 is 4
If it is a bite, as shown in the figure, "INTEGER84"
Holds the information. In the present embodiment, as illustrated in the information "REAL 8 8" related to the real number type, information about the type of data having the same length is also held in both.

The operation of the embodiment shown in FIG. 2 will be described below.

By executing the unformatted WRITE statement for the file 17 of the user program 13 of the computer 11,
When the control is transferred to the input / output processing routine 14 and the option analyzing means 241 is called, the option analyzing means 24
1 analyzes the first option 121 of the run-time option 12 so that the file 17 input / output this time is F
It recognizes that the file is input and output from another computer 15 having a different ORTRAN1 numerical storage unit, and transfers control to the internal table analysis means 242. It should be noted that when SAME is designated in the first option 121, the processing shifts to normal processing.

When the internal table analysis means 242 receives the control from the option analysis means 241, the variable I relating to the input / output at this time is an integer type. Therefore, information "INTEGER 8" concerning the integer type in the data type correspondence table 25 is used.
4 ”is analyzed, an instruction is given to process the integer type as 4 bytes, and the control is transferred to the input / output processing means 243.

The input / output processing means 243 inputs / outputs to / from the file 17 while performing conversion according to the contents instructed by the internal table analysis means 242. That is, although the variable I is processed as an 8-byte integer type in the own computer 11, since the integer type is specified to be input / output in 4 bytes, only the lower 4 bytes are output to the file 17.

In the embodiment shown in FIG. 2, the user only needs to specify the first option 121 in the run-time option 12, so that the file 17 that can be handled by another computer 15 having a different FORTRAN1 numerical storage unit is created more easily. be able to.

FIG. 3 is a block diagram showing still another configuration example of the computer system to which the present invention is applied. The same reference numerals as those in FIG. 2 denote the same parts, and 35 denotes a data type corresponding file,
Reference numeral 342 is a file analysis means.

In the embodiment of FIG. 3, the data type correspondence table 25 in the embodiment shown in FIG. 2 is shown as a file, that is, how each data type on the own computer 11 corresponds on the computer 15. It is retained as a data type correspondence file 35, and therefore, in the input / output processing routine 14 shown in FIG.
The file analysis means 342 is provided in place of the internal table analysis means 242.

In operation, by executing the unformatted WRITE statement for the file 17 of the user program 13, control is transferred to the input / output processing routine 14, the option analysis means 241 is called, and the first option 12 of the runtime option 12 is executed. When the control is transferred to the file analysis means 342 by the analysis of the option 121, the file analysis means 342
Since the variable I related to input / output this time is an integer type, the information “INTE” related to the integer type in the data type correspondence file 35
GER 8 4 "is analyzed, an instruction to process the integer type as 4 bytes is given, and the control is transferred to the input / output processing means 243. The input / output processing means 243 performs input / output with respect to the file 17 while performing conversion according to the instruction. It is something to do.

In the embodiment of FIG. 3, the data type correspondence file 35 suitable for the purpose can be prepared by the system, and the user prepares the data type correspondence file 35 suitable for the purpose. Since this is also possible, more flexible operation is possible than in the embodiment of FIG.

[0043]

As described above, according to the unformatted input / output processing method of the present invention, in the case of a file which is input / output also from another computer having a different FORTRAN1 numerical storage unit, the other computer is input to the other computer. Since you can execute unformatted I / O statements while converting to the matched data type,
FORTRA without modifying the user program
It becomes possible to operate unformatted input / output statements for the same file between computers having different N1 numerical storage units, which improves the transferability between computers and improves usability.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a computer system to which an unformatted input / output processing method of the present invention is applied.

FIG. 2 is a block diagram showing another example of a computer system to which the unformatted input / output processing method of the present invention is applied.

FIG. 3 is a block diagram showing still another example of a computer system to which the unformatted input / output processing method of the present invention is applied.

[Explanation of symbols]

 11, 15 ... Computer 12 ... Runtime option 13, 16 ... User program 14 ... Input / output processing routine 17 ... File 25 ... Data type correspondence table 35 ... Data type correspondence file 121 ... First option 122 ... Second option 141 ... First option analysis means 142 ... Second option analysis means 143 ... Input / output processing means 241 ... Option analysis means 242 ... Internal table analysis means 243 ... Input / output processing means 342 ... File analysis means

Claims (3)

[Claims] 1. In an unformatted I / O processing method for a computer, when the unformatted I / O statement for a file of the user program is executed, the user program performs input / output based on the first option in the runtime options. First option analysis means for determining whether or not the file to be processed is also a file to be input / output from / to another computer having a different FORTRAN1 numerical storage unit, and input / output from / to another computer by the first option analysis means. Second option analysis means for determining how to convert the type of data relating to the current input / output based on the second option in the run-time options by determining that the file is a file that includes the second option. The unformatted input / output is performed while converting the input / output and the specified type according to the determination result of the option analysis means. An unformatted input / output processing method comprising an input / output processing means for inputting / outputting a sentence. 2. In the unformatted input / output processing method in a computer, the file that the user program is going to perform input / output is FORTRA, when the unformatted input / output statement for the file of the user program is executed, based on the runtime option.
Option analysis means for determining whether or not the file is input / output from / to another computer having a different N1 numerical storage unit, and the option analysis means determines to be a file / output to / from another computer. The internal table analysis means for determining how to convert the type of data relating to the current input / output by referring to the contents of the data type correspondence table, and the input / output and An unformatted input / output processing method comprising: an input / output processing means for performing input / output relating to the unformatted input / output statement while converting a designated type. 3. In the unformatted input / output processing method in a computer, the file that the user program is going to perform input / output is FORTRA based on the execution time and the runtime option of the unformatted input / output statement for the file of the user program.
Option analysis means for determining whether or not the file is input / output from / to another computer having a different N1 numerical storage unit, and the option analysis means determines to be a file / output to / from another computer. By doing so, the file analysis unit that refers to the contents of the data type corresponding file to determine how to convert the data type related to the current input / output, and the input / output and the designation are performed according to the determination result of the file analysis unit. An unformatted input / output processing method comprising: an input / output processing means for performing input / output relating to the unformatted input / output statement while converting the type.